package Person.ith_34;

import java.util.Scanner;

public class Ma {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            try {
                int a = sc.nextInt();
                int b = sc.nextInt();
                System.out.println("sum = "+(a+b));
            }catch (Exception e){
                System.out.println("Incorrect input: two integer is required");
            }
            sc.nextLine();
        }


    }
}
